Warp stop-motion for looms.



No. 885,130. PATENTED APR.21, 1908.

l O. B. AMBLBR. WARP STOP MOTION POR LOOMS.

APPLICATION FILED AUG. 13. 1907.

` 2 SHEETS-SHEET 1.

PATBNTED APR. 21, 1908.

G. B. AMBLBR. W'ARP STOP MOTION POR LOOMS.

APPLICATION FILED AUG. 13. 1907.

2 SHEETS-SHEET 2.

- lUNrrED sTA-ifpsrfgnnr operon.

GEORGE'B. rmlBLElt,i OF SOUTH FRAMNGHAM, MiSAUHUSETTS, SSIGNOR TO DRAPER i (`.`(').\1PANY, 0F HOPEDALE, MASSAGHUSETTS, A COJHURATIQN OFMAINE.

WARP STOP-MTION FOR 1 on the lay; Fig. Be it known that :L'GEORGE B. AMBLER, ay

To' all whom it may concern.'

citizen of the L'nited States, and .resident of South Framingham, county o1' Middlesex,

20. the detectors being hung State 'ol .\lassachusetts, have invented an Improvement in lVarp Stop-Motions"for Looms, of which the following (lescription, inY onnection witlr'the accompanying drawing, isa specification, likeletters on the drawing representinglike parts..

This inventionrelates to warp-stop-motions for loomsI wherein controlling detectors are suspended from the warp-threads and `normally held thereby out ofthe path of a l 'vibrating l'eeler, release of a detector by failv. tor is employed'm my present invention., ,one

of the objects of which manually controlled means for limiting at 'times the descentof the detectors so that 'they cannot drop upon the Y I the fixed guide or support upon'which ythey upper edges of are vertically movable.

Another object of the invention is the rovision of means to effect' release of the sliipper on the backward stroke of the lay, so that tllie loom will be stopped-before beat up takes ace.

p The various novel features ol my invention will be fully described inthe subjoincd specicationand particularly pointed out in the following claims. I

r Figure I is a left-hand side elevationv of a sufficient portion of a loom, with onel embodiment' of my crank andl cam shafts .being shown insection Fig. 2 is an enlarged detail'in section on the line 2-2, Fig., 3, looking toward the left, of

-the detector supportsand'the feeler, with the manually' controlled means for position- .ing the feeler'; Fig. 3 is a front elevation and partial sectionV of the Feeler rock-shaft and .connections therewitn, Fig. 4 is a horizontal section ony the line 4 4, Fig. 2, of the locking .device `for the leder-positioning means; Fig. 5 isa front elevation of the dog, its swinging carrier, and adjacent parts,` to be described; Fig. 6 a. detail in si( e elevation showing the dog above the path of the bunter :Specification of Letters Patent.

I able shackle 7 with an u` i the provlsion oi i invention applied thereto, the.

Patented Apn'l 1,908.

Application filed August 13, 1907. Serial No.'388,319., f

depending therefrom a a lateral lip on a casting shipper is arranged to be rethe holding device by a bellloom side A. l

A link 6 is jointed to one arm ol' the said lej ver, the other end of the link, outside the loom frame, being connected turned carrier 8', on a stud $1 pro- ,i jecting laterally lrom a bracket 10,' see also Fig. 5.' ,l ,The shackle pivots on a pin 11 extended ,i from the outer side of the carrier, about mid- ,i way between its ends, and a stop 1.2 on the i bracket limits forward swing of the carrier.

Atits upper end'the carri r is bilurcated, see Fig. 5, to receive a pin 13 on which-is lulcruined a forwardly extended dog 1-'1 'preferably notched at its`lron't end at fulcrumcd at its llower en( stroke ofthe lay. v i A transverse rock-shaft l'extends through the loom frame, and on its outer projecting end isseeured' the hub 18 ol' a governor 19, shown as a somewhat pear-shapedlla'ttened receive a lug 21 extended l-1`orizontally fr'om the dog, thelatter and the governor being in parallellsm.

ele vatcs or de presses the dog correspon(lingly, above or below the path of the bunter 2, and `when the shipper is to be. released the governor positions the in the bunter path, so that as the lay swings back the bunter and dog will be moved rearward together, swinging thccarrier 8 on its fulcrum 9. Thereby the link 61's drawn back and the knock-olf lever` 4 is turned to release the lug or pin 21 slides in the slot 2() 'ol' the governor 19, as will be obvious.

The inner e'nd ofrock=shaft16 has secured to it a depending .arm 22 connected by a transmitting link 23, Fig. 1, with an arm 24 depending from' and secured Ato the feeler l the lay il has secured to crank knock-olil lever 4 lulcrl-nned at 5 on the1 by an adj ust-A plate longitudinally slotted. at 20 to loosely The raising or lowering of `tho` governor dog 14 as shown in Fig. 8`

the shipper, and whenthc dog is moved back '15, to at times cooperate with the bui'1-ter2 on the back` .a bearing 17 on thebracket 1() and through -rock-shaft 25, extended across the loom and mounted in suitable bearings 26, one of which is shown. in Fig. 3

A's vthe rock-shaft 25 is oseillated, as will be described, the connection between it and the fovernor rock-sl1aft 16 will oseillate the atter in unison, and the governor will be raised and lowered alternately, so that on one pick the dog 14 will pass over the! bunter 2, as in Fig. 6, and .on the next )ick it will ass under the bunter, Fig. 7, so long as the oom runs and no Warp fault occurs.

A plate 27 is connected with the rock-shaft by short arms 28 and constitutes the feeler, as is well known to those skilled in the art, and herein the feeler is vibrated in a f'path just below .the lower edges of two transverse flat bars or detester-supporters 20, 29

arranged in )ai-alleiism.

Upon` eac support is .loosely mounted a series of detectors 30, preferably made oi thin, at metal each having a longitudinal slot 31 therein extended upward from its lower end, the detectorsv being suspended leach from a single warp-thread, in well known manner. l

The support passes loosely -through the slots ofthe detectors and the latter can move vertically upon the sup ort, the warpthreads passing through t e slots between their upper ends and the up )er edge of the adjacent support, as clearl s own in Fig. 2. Herein I use two series of etcctors and they are hun on the Warp-threads between the lease-ro -s L, L.

If a detector is released by its warp-thread it will dro and its inner leg will be interposed between t e support andthe advancing edge of. the feeler 27, to arrest the latter and through the mechanism described opleratively position the dog 14 in the path of t e bunter 2, to release the shipper as the lay is on its back stroke.

When the feeler 27 is moving in one direction it will coperate with a released detector in one series, and when moving in the opposite dn'eetlon 1t will coperatewith a releasedy detector of the other series, 1n a manner common to double action feelers.

The feeleris of such width that when it is centered, `as in Fi 2, it will project beneath the inner legs of 51e detectors of both series, and Will then serve to limit descent of the detectors.

When the weaver is taking out a pick, technically vtermed picking out, the movement impartedto the warp frequently causes the detectors to jump up and down, 'the warp being slack, and with some wax-ps the consequent hammering or pinching and catching lof the threads between the' upper ends of the detector-slots 31 and the VVupper edge of the support 29 will ray or break the threads.

When the feeler is centralized as in Fig. 2

the detectors cannot descend far cnough lo catch the threads in this mamur, and l have provided manually controlled incans to so cenla'alizc tlu` feelcr when the loom is at rest. To this vnd an arm 32 fast on ihc l'cclcr rockshal't 25 has pivolally connected with it a bont, uplurncd arln 33 hoo-kcd al 3H to forni a linger-piece, and providcd al one edge with three slots 35, 3h', l. Fig. 2, anyv one' of which is adapted to' reccirc u slop pin 3N.

Said stop pin projects l'roin thc inner l'acc ifA an open guide 3S) through which tlu` arm H3 extends, its eight normally holding the arm slidahly against lhc front end of thc guide, so that. the arm rises and l'alls as the fcclcr vibrates.

When the loom 'at rcst and the weaver wishes to keep the detectors liltcd while slackening the warp he lifts the arm 33 and when the notch-36 is opposite the stop pin 3S throws back the arm to cause the pin to enter said notch. 'lhis holds thearm in ,position and centralizcs the feeler 27 in the positio'n shown in Fig. 2, so that picking-out or any other manipulation of thc warp can bc. proceeded with and there will be no danger of cutting the threads by the jumping ol the detectors on their supports.

If the loom stops by reason oia released detector engaging the feeler the latter can be. retracted by means of the arm 33, and held in retracted position. 'ihat is, ii a detector in the left-hand series, Fig. 2, is caught bv the feeler the arm 33 is lifted and the notch 35 brought into engagement with the stop in 38, whereas if it is a detector in the rightand series the arm 33 is pushed down to bring the notch 37 into coi'iperation. with the pin. In either ease the feeler is held in retracted position as long as desired, and until the arm 33 is ositively unlocked.

The back o the guide 3) is upturned and provided with a horizontal tubular bearing 40 for a latch 41, see Fig. 4, having a double beveledend to cooperate with one or the other face o'laV corrcspomlingly beveled rib or kee er .42 on the side of arm 33, the shank 43 of t 1e latch passing through a hole in the end of the bearing 40 and being surrounded with a spring 44 within said bearing.

When the arm is moved to'bring one of its notches into cooperation with the stop pin 38 the latch 41 snaps across the keeper and engages the face thereof at the left, viewing Fig. s, and said arm is unlocked by moving it back again to the position therein shown.

Vibration olt the feelcr 27 may be effected in any suitable manner, and herein 1 show mechanism substantially such as is shown and described in United States Patent No. 784920 granted March 14, 1905 to Chase, the reference characters being changed somewhat.

The camshaft C", Fi f. 1, has a cam C fast thereon cooperating wit a pivoted follower kill) 45 held by 4a spring 46 against the cam and '.Fig. 3, is iixed. to the arm 48 and its other end is secured within a sleeve 50lfast on the shaft, the spring forming a yielding connection between the shaft andthe arm 4S, as in the (.hase patent referred to, `A lug 51 on the said arm cooperates with a'lug 52 on the adj a cent collar 53 fast on the feeler rock-shaft 25.

W'hen the link 47 is raised therock-shaft is turned in the direction of arrow 500, Fig. 2, through. the spring 4), and if the feeleris arrested by a detector in the rear series, sto ping the rock-shaft 25, the spring yields ast le arm 48 completes its full movement, the lugs 51, 52 then separating. When the link 47 is moved downward, by the pull of the spring 46, Fig. l, the lug 51 acts upon lug 52 and turns the 'leeler rock-shaft opposite to the arrow 500, and if a detector in the front lseries arrests the feeler on that stroke the follower 45 is held away from the cam- (l. In either.

case the arrest of the eeler stops the oscillation of thc rockshat 25. While this particular mechanism for operating the feeler is convenient and simple, my

invention is not restricted thereto, as I may utilize any other suitable mechanism adapted to operate a double-throw feeler. i

Having fully described my invention, what I claim asne'w and desire to secure by Letters Patent isz- I 1. The" combination, in a loom, of two detector-supports l arranged in parallelism, a t'celer normally vibratable beneath and adliacent the su orts, a series of detectors Vertically movable on each support, said detectors being longitudinally slotted from their lower ends,. and each sus ended from a single warp thread, manua ly' controlled means to centrally -position the feeler below and to limit descent oi the detectors, to prevent catching of the warplthreads between the upper ends of the detector-slots and the upper edges of their-supports, and a looking device for said means.

' 2. The combination,. in a loom, of t'wo detector-supports arranged in parallelism, a teeler normally vibratable lbeneath and adjacent the supports, a series of detectors vertically movable on each support, said detectors'being longitudinally .lotted from their lower ends and each suspended from a single emp-thread, manually controlled means to centrally position the feeler below and to limit descent ofthe detectors, to prevent catching of the warp-threads between the upper ends of the detector-slots and the upper edges oi" their supports, and a spring` f-onlrolled latch to lock said means and retain the leeler in eentral'position. v I5. lhe combination, in a loom, of two detect.u-suppmts arranged in parallelism, a

One

feeler normally vibra-table beneath and adjacent the sup orts, a series of detectorsvertically movab e on each support, and each suspended from a single warp-thread, each detector having a single slot through which its thread and the support is extended, the ieeler engaging the edge of and being arrested by a released detect-or, and manually con'. trolled means to centi-alize the feeler and also. to retract it from engagement with a released detector in either series, centrali/.a3v tionoic the feelr causing it to serve as a stop to prevent the descent of the detectors upon the upper edges ol'thfeir sup iorts.

4. The combination, in a oom, of two de- 80E tector-supports arranged in parallelism, a feeler normally vibratable beneath and ad jacent the sup orts, a series of detectors veri tically'movab e on each support, and each ,suspended froma -single warp-thread, each ,gr

detector having a single slot through which its thread and the support is extended, the

feeler engaging the edge of and being arrested by a releasedde'tector, manually controlledmeans to centralizel the eel'er and also to re- 90 tract it from engagement with a released de tector in either series, and a locking device for said means, to maintain the feeler in any of the threepositions specified.

5. Thecombination, in aloom, of two detector-supports arranged in parallelism, a feeler normally vibratable `beneath-and adjacentthe su orts, a series of cleteetorsver-A tically movable on each. support, and each suspended from a single warp-thread, each detector having a single slot thro-ugh which its thread and the support is extended, the feeler engaging theedgeof and being arrested by a released detector, a manually controlled arm connected with the feeler and having three notches, movement of thefarm central- 4izing the feeler or retracting it from engagement With a released detector of either series, a stop pin to enter any one of the notches and thereby hold the 'arm and feeler in a corre- 110 spending position, and a spring latch' cooperating withthe arm toretain it in engagement-with the stop pin.

6. In a loom, in combination, a shipper, a

knockoii lever therefor, a swinglng carrier I and a link connecting it with said lever, a dog pivoted on the carrier, the lay, a bunter thereon to at times coperate with the dog on the back stroke of the lay and swingthe carrier,` to thereby operate the knock-oil' 120 lever and release the s iipper, a series of,detectors maintained. inoperative by intact warp-threads, a vibrating feeler to engage and be arrested by a released detector, a

rocking governor operativelyk connected in sliding engagement with the dog, and connections between the feeler and governor to rock and position the latter according to the position of the i'eeler, the governor normally moving the dog out of the bunter path and 1.30

y the dog, aslot and pin connection between the governor and the dog, a series of detectors suspended from the warp-threads, a, normlly vibrating feeler to engage and he arrested by a, released detector, and ineens intermediate the feeler and governor to nornmlly rock the letter and move the dog out ol the bunter path except when the 'eeler is arrested by engagement with e deteetor, the connection between the dog and governor )ermitting relative movement of the dog' wlhen engaged by the bunter.

8. In a, loom, in combination7 e shipper, e knock-oli' lever therefor,4 an upright swinging' carrier', a fixed fulerum for its lower end, e dog pivotelly mounted on the carrier and having e lateral lug, e link connecting the l carrier and knock-ofi leverI e ley, e bunter thereon operative on the backward stroke, to

et times engage the dog` and swing the carrier and thereby eetuete the knock-oil lever, :i rock-shaft having :in attached :irm and :t longitudmadly-slotte(l governor to receive the lug on the dogJ e series of detectors eeeh snspended 'from n werp-thread, e vibrating feeler te enge ge sind be arrested by :i released detector, end e transmitting connection-be tween the feeler and the arm to rook the shaft in unison with the vibrations of the feeler, whereby the governor moves the dog into und out of the path of the bunter, arrest of the feeler eeting through said governor to position the dog in the path ol the bunter, the slot in the governor aeeonnnoilai-ting the movement of the dog with the swinging enrrier when the bunter eopereti-is with the dog.

ln testimony whereof, [have signed my naine to this speeifiention in the presence of two subscribing' witnesses.

GEORGE B. AMBlulR.

Witnesses:

E. A. Demme, FRANK J. DUTeHnn.

ll (l 

